| Office: | Member of the National Assembly for Pas-de-Calais's 7th constituency |
| Predecessor: | André Capet |
| Birth Place: | Calais, France |
| Party: | Rally for the Republic |
| Birth Date: | 4 July 1946 |
| Termstart: | 28 March 1993 |
| Termend: | 21 April 1997 |
| Successor: | André Capet |
| Nationality: | French |
Claude Demassieux (born 4 July 1946) is a French politician from Rally for the Republic, who served as a member of the National Assembly between 1993 and 1997, representing the Pas-de-Calais's 7th constituency.[1]